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334 results for “shale”
MAGIC Deliverable D6.5: Shale gas development in the EU 10Km radius well grid scenario
<p>Geo data set of escenario of shale gas implementation in Europe. Developed for WP 6 of the <a href="https://magic-nexus.eu/">MAGIC-Nexus project</a>. It derives from a Geomodel of wells and a database of shale gas played developed by the <a href="https://ec.europa.eu/jrc/sites/jrcsh/files/pl1-britze.pdf">EUOGA </a>project. </p> <p><strong>DB Fields------------------------------------------</strong></p> <p>WELLid: Id of the well</p> <p>RBid: Id of the River Basin in which the well is located</p> <p>RBtxtINT: Name of the River Basin - English</p> <p>RBtxt: Name of the River Basin - Country's Name</p> <p>GWid: Groundwater basin ID</p> <p>PADid: ID of the extraction pad</p> <p>Formation: Shale formation</p> <p>Age: of the well </p> <p>Depth_avg: Average depth of the shale (inherited)</p> <p>Mature_avg: Average matureness of the shale (inherited)</p> <p>TOC_avg: Average Organic content of the shale (inherited)</p> <p>ThickGross: Gross Thickness of the shale play in meters (inherited)</p> <p>ThickNet_m: Net Thickness of the shale play in meters (inherited)</p> <p>EUOGA_Basi: Basin of the well according ot the EUOGA project database (inherited)</p> <p>Basin_inde: Id of the shale basin (inherited)</p> <p>NGS_Basin: Id of the BAsin as stated by the national geological service</p> <p>Shale_CP: Shale country </p> <p>RF_Maturit: Reference Maturity</p> <p>RF_Depth: Reference Depth</p> <p>CNTR_CODE, Country code</p> <p>NUTS_NAME: Name of the NUTS region</p> <p>NUTid: ID of the NUTS region</p> <p>x,y Coordinates of the well</p>
Enhanced 3D velocity structure, seismicity relocation and basement characterization of Changning shale gas and salt mining regions in Sichuan Basin
<p>This repository contains the datasets and results of the joint inversion-based Vp/Vs model consistency constrained double difference seismic tomography carried out for the manuscript titled “Enhanced 3D velocity structure, seismicity relocation and basement characterization of Changning shale gas and salt mining regions in Sichuan Basin.” Included are the following: column descriptions of data files, catalog earthquake information (CX_event.dat), relocated events after inversion (CX_tomoDDMC.reloc), inverted Vp model (CX_Vpmodel.dat), inverted Vs model (CX_Vsmodel.dat) and inverted Vp/Vs model (CX_VpVsmodel.dat). Please consult the manual for tomoDD by Zhang and Thurber (2003) for detailed formats of these files. In addition, an averaged velocity model (MOD_averaged) computed based on the inversion results is included, and the converged model (Vp_model_reinverted) resulting from the reinversion, as well as basement structure data for Figure 14.</p>
Experimental measurements of creep deformation of Tournemire shale loaded at specified pressure (10 MPa) and room temperature (26°C)
<p>Following the experimental protocol used in (Geng<em> et al.</em>, 2018), we performed the stepping creep experiments at a confining pressure of 10 MPa. We first loaded the samples under hydrostatic conditions up to 10 MPa at a pressure rate of 0.3 MPa/min. Hydrostatic conditions were maintained for ~18 h at 26 °C. Next, differential stress (axial stress minus confining pressure) was increased to a fixed initial stress (30 MPa) and maintained (creep status) for 24 h. The differential stress was repeatedly increased by 5 MPa and maintained for 24 h, until brittle failure. All the experiments were conducted using the triaxial apparatus installed at the Laboratoire de Géologie of ENS-Paris (France). There were few constraints on the natural saturation state of the samples because of their low permeability (10<sup>-19</sup> 10<sup>-21</sup> m<sup>2</sup>). To avoid exposition redundancy, an additional description of the technical performance of the triaxial apparatus can be referred to (Brantut<em> et al.</em>, 2011, Sarout & Guéguen, 2008).</p> <p>Compressive stresses and compactive strains are denoted as positive. Axial creep deformation was measured using three capacitive gap sensors that externally monitored the overall axial displacement of the piston during creep deformation. Volumetric strain during creep was estimated by adding the average of axial strains (axial displacement of the piston divided by the sample length) and two average radial strains measured by four radial strain gauges glued uniformly around the cylindrical rock surface. As the deformation rate generally stabilized during the last 8 h in most creep periods (Geng<em> et al.</em>, 2018), we estimated the average axial strain rate over the last 8 h of each step to characterize the creep strain rate under the corresponding axial loading stress. More technical details of the sample configuration and creep rates estimation can be found in (Geng<em> et al.</em>, 2018).</p>
Laboratory dataset on Self-Heating Behavior and Ignition of Shale Rock
<p>The file attached contains a complete set of experimental data from shale rock self-heating ignition cubic basket experiments. The experiments were carried out in a thermostatically controlled oven with thermocouples for measuring the ambient and shale sample temperatures. The data is divided in two parts, one for coarse particles and one for fine particle experiments. The data reported includes the dates of experiments, volume of shale basket being tested, oven ambient temperature, fuel mass of shale, bulk density of the shale, residue mass after the experiment, percentage of residue in respect to initial mass, and if the sample ignited or not. This data is in support of the journal paper:</p> <p>F. Restuccia, N. Ptak, G. Rein, <strong>Self-Heating Behavior and Ignition of Shale Rock</strong>, <em>Combustion and Flame</em>, Vol 176, 2017, pp 213-219. doi: 10.1016/j.combustflame.2016.09.025.</p>
UK shale gas air and water quality data
<p>Datasets for UK coal bed methane compositions (Airth field), shale gas composition from Bowland shale operations and produced water composition from UK Airth field.</p>
Data from: The Fezouata Shale Formation biota is typical for the high latitudes of the early Ordovician – a quantitative approach
<p>The Fezouata Shale Formation has dramatically impacted our understanding of early Ordovician marine ecosystems before the Great Ordovician Biodiversification Event (GOBE), thanks to the abundance and quality of exceptionally preserved animals within. Systematic work has noted that the shelly fossil sub-assemblages of the Fezouata Shale biota are typical of open-marine deposits from the Lower Ordovician, but no studies have tested the quantitative validity of this statement. We extracted 491 occurrences of recalcitrant fossil genera from the Paleobiology Database to reconstruct 31 sub-assemblages, to explore the paleoecology of the Fezouata Shale and other contemporary, high-latitude (66°S – 90°S) deposits from the Lower Ordovician (485.4 Ma – 470 Ma) and test the interpretation that the Fezouata Shale biota is typical for an Ordovician open-marine environment. Sørensen's dissimilarity metrics and Wilcoxon tests indicate that the sub-assemblages of the Tremadocian-aged lower Fezouata Shale are approximately 20 percent more heterogenous than the Floian-aged upper Fezouata Shale. Dissimilarity metrics and visualization suggests that while the lower Fezouata and upper Fezouata share faunal components, the two sections have distinct faunas. We find that the faunal composition of the lower Fezouata Shale is comparable with other Tremadocian-aged sub-assemblages from high latitudes, suggesting that it is typical for an early Ordovician open-marine environment. We also find differences in faunal composition between Tremadocian- and Floian-aged deposits. Our results corroborate previous field-based and qualitative systematic studies that concluded that the shelly assemblages of the Fezouata Shale are comparable with those of other Lower Ordovician deposits from high latitudes. This establishes the first quantitative baseline for examining the composition and variability within the assemblages of the Fezouata Shale which will be key to future studies attempting to discern the degree to which it can inform our understanding of marine ecosystems just before the start of the GOBE.</p>
FIG. 7 in A new operculate symmoriiform chondrichthyan from the Late Mississippian Fayetteville Shale (Arkansas, United States)
FIG. 7. — Consensus of eight most parsimonious trees. Bootstrap values are shown above branches; bootstrap values below 50 are not shown. New taxon Cosmoselachus n. gen. indicated by yellow highlight, holocephalan group and symmoriiform group indicated in differing shades of gray.
FIG. 5. — Cosmoselachus mehlingi n. gen., n in A new operculate symmoriiform chondrichthyan from the Late Mississippian Fayetteville Shale (Arkansas, United States)
FIG. 5. — Cosmoselachus mehlingi n. gen., n. sp., specimen AMNH FF 20509: A, cross section through the posterior half of the specimen, at the point indicated by the inset 3D reconstruction, showing multilayered opercular structure made of cartilaginous branchial rays, fused to one another. Layer of rays from the first branchial arch (behind the hyoid arch) indicated by the second-from-left arrowhead. The right-most arrowhead marks the second row of pharyngeal rays (first branchial arch); another layer (second branchial arch) can be found just beneath it (second arrowhead from the right). Hyoid operculum appears to fold at the arrowhead furthest to the left; B, longitudinal section of posterior half of AMNH FF 20509 showing hyoid operculum (right-most arrowhead) and additional elongate branchial rays (left two arrowheads). Anterior to left, slice location within the specimen indicated by 3D reconstruction in the upper right corner. Scale bars: 5 cm.
FIG. 3. — A in A new operculate symmoriiform chondrichthyan from the Late Mississippian Fayetteville Shale (Arkansas, United States)
FIG. 3. — A, Tooth families of Cosmoselachus n. gen. on the Meckel's cartilages, with denticles between tooth families. Teeth make contact but have no fused bases, dorsal oblique labial view; B, detail of tooth batteries in axial section, anterior to right, showing denticles between each tooth family, on the scalloped Meckel's cartilage. Abbreviations: d, denticles; mc, Meckel's cartilage; t, teeth. Scale bars: A, B, 4 cm; C, 2 mm.
FIG. 2. — Cosmoselachus mehlingi n. gen., n in A new operculate symmoriiform chondrichthyan from the Late Mississippian Fayetteville Shale (Arkansas, United States)
FIG. 2. — Cosmoselachus mehlingi n. gen., n. sp., three-dimensional renderings of specimen AMNH FF 20509, produced by computed tomographic (CT) scanning: A, ventral view of posterior half of specimen, anterior to top; B, ventral view of anterior part of the specimen, anterior to right, with opercular elements removed; C, dorsal view of anterior half of specimen, anterior to right. Note loss of anterior portion of cranium due to taphonomy. Abbreviations: add, depression potentially for adductor musculature; c, cranium; cb, ceratobranchials; ch, ceratohyals; d, denticles; mc, Meckel's cartilage; op, opercular cartilage; pa f, pharyngeal arch fragments; pq, palatoquadrate fragment; t, teeth. Scale bars: 5 cm.
FIG. 1. — Cosmoselachus mehlingi n. gen., n in A new operculate symmoriiform chondrichthyan from the Late Mississippian Fayetteville Shale (Arkansas, United States)
FIG. 1. — Cosmoselachus mehlingi n. gen., n. sp., specimen AMNH FF 20509, anterior to right: A, entire specimen, ventral view. Abbreviations: mc, Meckel's cartilage; op, opercular flap; B, detail of opercular flap. Scale bars: A, 5 cm; B, 2 cm. Photographs by Lorraine Meeker.
FIG. 6. — Cosmoselachus mehlingi n. gen., n in A new operculate symmoriiform chondrichthyan from the Late Mississippian Fayetteville Shale (Arkansas, United States)
FIG. 6. — Cosmoselachus mehlingi n. gen., n. sp., partial basicranium of specimen AMNH FF 20509: A, dorsal view; B, ventral view. Anterior to top. Abbreviations: da?, possible opening for the dorsal aorta; occ, occiput; ot cap, otic capsule. Scale bar: 3 cm.
High-resolution images of 1550 Ordovician to Silurian graptolite specimens for global correlation and shale gas exploration
<p>A unique graptolite image dataset consists of key graptolite species used for dating rocks, global correlation, and “gold caliper” for locating shale gas favourable exploration beds (FEBs) in China. <br> All images were taken from 1,550 carefully curated graptolite specimens, taxonomically belong to 113 graptolite species or subspecies. They were collected from the Ordovician to Silurian sediments of China and published in 1958-2020. These specimens are preserved as shale and were collected from 154 representative geological sections of China. All specimens are housed at the Nanjing Institute of Geology and Palaeontology (NIGP), Chinese Academy of Sciences (CAS).</p> <p>My working group spent over two years to complete photographing every specimen using a single-lens reflex camera Nikon D800E with Nikkor 60 mm macro-lens and Leica M125 and M205C microscopes equipped with Leica cameras. Every image is well focused and better shows the morphology of graptolite bodies.</p> <p>In total, we took 40,597 images, including 20,644 camera photos (each with a resolution of 4,912 × 7,360) and 19,953 microscope photos (each with a resolution of 2,720 × 2,048). Photos of low contrast or bad focus were removed from the whole collection. We only kept and selected the photos that show the visual morphology of every specimen and the diagnostic character of each graptolite species that the specimens represent. We selected one image for each specimen as the present final dataset, uploaded to and stored in our cloud server.</p> <p>We incorporated revision suggestions from distinguished palaeontologists to generate the ground-truth labels, providing a taxonomical authority of the dataset. The dataset potentially contributes to a range of scientific activities and provides 1) easy access to high-resolution images of 2951 specimens of 113 graptolite species for teaching and training in palaeontology and geologic survey; 2) Global bio-stratigraphic correlation using graptolites, especially with those bio-zone species; 3) A standard fossil specimen image dataset used in shale gas industry to improve exploration efficiency, and 4) The potential aid of developing image-based automated classification model.</p> <p>Every specimen has two photos, one is original, another shows specimen with a scale bar. Occasionally in some large image the scale bar is embedded and beside the fossil specimen.</p> <p>All in JPG format. Single JPG file ranges from 822 KB to 7.055 MB. </p> <p>Total :10.4 GB.</p>
Text-fig. 4. Dispersed megaspores on the surface of 1,000 mm2 of shale at Brymbo (a) with an enlargement showing Lagenicula horrida ZERNDT (b). in Why Lycospora Dominated Many Pennsylvanian Spore Assemblages
Text-fig. 4. Dispersed megaspores on the surface of 1,000 mm2 of shale at Brymbo (a) with an enlargement showing Lagenicula horrida ZERNDT (b).
Text-fig. 4. a: Conglomeratic to massive sandstone facies 1, facies A are composed of Andesit (AF), Clay (CF) and Sandstone (SF) fragments lain on medium-sandstone. b: Conglomeratic to massive sandstone facies, outcropping of massive sandstone facies comprises of fine to medium grain size of grey to yellowish sandstone. c: Heterolithic sandstone-mudstone facies, intercalation of fine sand with silt and shale as type form of heterolithic sandstone mudstone as indicated by a high sand/shale ratio. d: Example outcrops of heterolithic sandstone-mudstone 2 indicated by low sand/shale ratio. e: Heterolithic fine sand and mudstone and mudstone facies, intercalation of thin sandstone and shale. f: Representative of slump deposits outcrops belong to conglomeratic to massive sandstone facies, which is indicated by the intercalation of sandstone and shale and some disturbed beds or layers as seen in slump deposits. The facies type is normally deposited within the basin floor, channel margin or as a product of the overbank deposits. In this figure the slump deposit is shown as internal bedding, some occurred on the bedding-plane. Trend slope measurement of the fold-axis revealed values N 135°E and N 108°E. in Lithofacies And Ichnofacies Of Turbidite Deposits, West Java, Indonesia
Text-fig. 4. a: Conglomeratic to massive sandstone facies 1, facies A are composed of Andesit (AF), Clay (CF) and Sandstone (SF) fragments lain on medium-sandstone. b: Conglomeratic to massive sandstone facies, outcropping of massive sandstone facies comprises of fine to medium grain size of grey to yellowish sandstone. c: Heterolithic sandstone-mudstone facies, intercalation of fine sand with silt and shale as type form of heterolithic sandstone mudstone as indicated by a high sand/shale ratio. d: Example outcrops of heterolithic sandstone-mudstone 2 indicated by low sand/shale ratio. e: Heterolithic fine sand and mudstone and mudstone facies, intercalation of thin sandstone and shale. f: Representative of slump deposits outcrops belong to conglomeratic to massive sandstone facies, which is indicated by the intercalation of sandstone and shale and some disturbed beds or layers as seen in slump deposits. The facies type is normally deposited within the basin floor, channel margin or as a product of the overbank deposits. In this figure the slump deposit is shown as internal bedding, some occurred on the bedding-plane. Trend slope measurement of the fold-axis revealed values N 135°E and N 108°E.
FIGURE 3. Picked bryozoan fragments from the disaggregated, sieved samples from the Finis Shale. A – profile B15 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA
FIGURE 3. Picked bryozoan fragments from the disaggregated, sieved samples from the Finis Shale. A – profile B15; B – profile B16; C – profile C5; D – profile C13.
Figure 9 in The lower actinopterygian fauna from the Lower Carboniferous Albert shale formation of New Brunswick, Canada - a review of previously described taxa and a description of a new genus and species
Figure 9. Scales from †Lambeia pectinatus (YPM 8664). Scales are from region B3 (see Fig. 8) and have pectinated posterior and ventral margins. (a) Photograph of scales from latex peel; (b) illustration of scales.
Figure 6 in The lower actinopterygian fauna from the Lower Carboniferous Albert shale formation of New Brunswick, Canada - a review of previously described taxa and a description of a new genus and species
Figure 6. Reconstruction of the head of †Lambeia pectinatus detailing bones and ganoine ornamentation. Illustration based on type and only specimen, YPM 8664. Abbreviations: ao, antorbital; aop, accessory opercular bones; br, branchiostegal rays; cl, cleithrum; d, dentary; dh, dermohyal; dpt, dermopterotic; dsp, dermosphenotic; ex, extrascapular; io, infraorbital; lg, lateral gular; mdr, median dorsal rostral; mg, median gular; mx, maxilla; n, nasal; op, operculum; p, parietal; pc, postcleithrum; pop, preoperculum; pp, post-parietal; ps, presupracleithrum; pt, posttemporal; sc, sclerotic; scl, supracleithrum; so, suborbital; sop, suboperculum; sup, supraorbital; vr-pmx; ventral rostro-premaxilla. Dark gray filled circles represent sensory pores; light gray areas represent areas of infilling; dashed lines represent areas of ambiguity and reconstruction.
Figure 3 in The lower actinopterygian fauna from the Lower Carboniferous Albert shale formation of New Brunswick, Canada - a review of previously described taxa and a description of a new genus and species
Figure 3. Illustrations of type specimens of Jackson's (1851) original species from the Albert Formation of New Brunswick, Canada. (a) †Rhadinichthys (†Palaeoniscum) alberti, illustration of MCZ 5082; (b) †Rhadinichthys (†Palaeoniscum) cairnsii, illustration of MCZ 5084; (c) †Elonichthys brownii, illustration of MCZ 5083. Dashed lines represent areas of ambiguity that have been reconstructed. Scale bars equal 5 mm.
Figure 1 in The lower actinopterygian fauna from the Lower Carboniferous Albert shale formation of New Brunswick, Canada - a review of previously described taxa and a description of a new genus and species
Figure 1. Map of locality. (a) Map of North America; box highlights area enlarged in (b). (b) Close up of New Brunswick, Canada. Dashed line indicates Albert County, where the majority of the specimens were collected. Black dot indicates Hillsborough, the site at which the original material described by Jackson was collected. Scale bar equals 50 km; (a) not to scale. Map modified from Google Maps, Map Data: ' 2015 Google.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.